/*
 * Author: Benedikt Sauter <sauter@ixbat.de>
 * All rights reserved.
 *
 * Short descripton of file:
 *
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials provided 
 *     with the distribution.
 *   * Neither the name of the FH Augsburg nor the names of its 
 *     contributors may be used to endorse or promote products derived 
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef SPI_H
#define SPI_H

#include <avr/io.h>
#include <avr/pgmspace.h>

#define MOSI PB2
#define MISO PB3
#define SCK PB1

enum { SPI_SPEED_125kHz, SPI_SPEED_250kHz, SPI_SPEED_500kHz, SPI_SPEED_1MHz,
       SPI_SPEED_2MHz,   SPI_SPEED_4MHz,   SPI_SPEED_8MHz };

void spi_parser(char *buf);

void spi_init_usb(uint8_t dord, uint8_t mode, uint8_t speed);
int spi_init(uint8_t dord, uint8_t mode, uint8_t speed);

void spi_deinit_usb(void);
int spi_deinit(void);

void spi_send_usb(uint8_t length, char * buf);
int spi_send(int length, char * buf);

void spi_receive_usb(int length);
unsigned char spi_receive(int length, char * buf);

void spi_send_and_receive_usb(char * txbuf, int length);
int spi_send_and_receive(char * txbuf, char * rxbuf, int length);


#endif /* SPI_H */
